How much does a 3.00 to 4.99ct G I1 natural marquise diamond cost?

As of September 2026, 3.00 to 4.99ct G I1 natural marquise diamonds typically cost €10,073 EUR to €60,351 EUR, with a median price of €38,983 EUR. There are currently 13 diamonds matching this specification available across retailers.

Where can I find the best price on a G I1 marquise diamond?

About 25% of these diamonds are available at multiple retailers, with an average price spread of 39%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct G I1 Natural Marquise

Quick answer

As of September 2026, there are 13 natural marquise diamonds with G colour and I1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run €10,073 EUR to €60,351 EUR, with a median of €38,983 EUR. At least 9 retailers stock this exact specification, and 25% of the stones appear at more than one of them, with an average price spread of 39%. Half of all listings fall between €3,051 EUR and €4,407 EUR per carat. Over the last 30 days the median price moved -23.0% and the number of listings moved -63.6%.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, August 2026: natural diamonds at 2,184 USD per carat and lab-grown at 464 USD per carat, a natural to lab ratio of 4.7 to 1. Marquise natural stones in the index: 2,114 USD per carat, -8.8% month on month. See the full index release

Figures come from live listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: September 2026

Available

Lowest Price

€8,782 EUR

Highest Price

€66,848 EUR

Average Price

€33,109 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

25.0%

Price Spread

38.5%

30-Day Price Trend

-23.0%

30-Day Supply Change

-63.6%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$4,036/ct

10th Percentile

$2,794

Median

$4,036

90th Percentile

$7,561

Score Distribution

13 diamonds scored across 3 quality tiers

Very Good

7 (53.8%)

Good

2 (15.4%)

Average

4 (30.8%)

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Related Specifications

D IF D VVS1 D VVS2 D VS1 D VS2 D SI1 E IF E VVS1 E VVS2 E VS1 E VS2 E SI1 F IF F VVS1 F VVS2 F VS1 F VS2 F SI1 G IF G VVS1 G VVS2 G VS1 G VS2 G SI1 H IF H VVS1 H VVS2 H VS1 H VS2 H SI1 I IF I VVS1 I VVS2 I VS1 I VS2 I SI1